For tubular structures, such as blood vessels, the hydrogel is printed in the centre and around the outside of the ring of each cross-section before the cells are added.

在生产管状结构，例如血管时，每一层细胞涂布之间，水胶会被涂布到血管截面的内外来形成支撑。

youdao

The cross and ring are worn by the Church Moderator on official duties.

BBC: Ring

When he was first unveiled as Cardinal Brady's likely successor, Monsignor Martin spoke about the influence of his large family, and the new cross and ring that he will wear as coadjutor Archbishop also bears a strong family connection.

BBC: Northern Ireland

The Church of Scotland is offering a reward for the return of the Moderator's official ring and cross, which were lost at Edinburgh Airport.

BBC: Ring